docs: def meta(self):
          """
          Get metadata from the query itself. This is guaranteed to only
          return a Python dictionary.
  
          Note that if the query failed, the metadata might not be in JSON
          format, in which case there may be additional, non-JSON data
          which can be retrieved using the following
  
          ::
  
              raw_meta = req.raw.value
  
          :return: A dictionary containing the query metadata
          """
          if not self.__meta_received:
              raise RuntimeError(
                  'This property only valid once all rows are received!')
  
          if isinstance(self.raw.value, dict):
              return self.raw.value
          return {}